This production number is called "Millennium Falcon," a song set to the tune of "Greased Lightning" from Grease. It's a part of the 1996 high school musical version of Star Wars produced by the students of Palos Verdes Peninsula High School. Other numbers used tunes from Godspell, Les Miserables, and Tommy. The entire production is available (with subtitles) in six video segments posted at Salon. Link -via Metafilter